Diode-pumped Tm: KY(WO4)2 laser passively modelocked with a GaSb-SESAM

Maxim Gaponenko, Valentin J. Wittwer, Antti Härkönen, Soile Suomalainen, Nikolay Kuleshov, Mircea Guina, Thomas Südmeyer

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)
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    Abstract

    We present the first diode-pumped modelocked thulium (Tm3+) laser based on a double-tungstate crystalline gain material. The solid-state laser consists of a Tm:KY(WO4)2 crystal as gain medium and a GaInSb/GaSb quantum well saturable absorber for self-starting passive mode locking. The laser is pumped by a multi-mode fiber-coupled laser diode at a wavelength of 793 nm. An average output power of 202 mW is achieved at a center wavelength of 2032 nm. Pulses with duration of 3 ps are generated at a repetition rate of 139.6 MHz. We also report on the first noise evaluation of a modelocked solid-state laser operating in the 2-µm wavelength range. We measured a timing jitter of sub-100 fs and a relative intensity noise of only 0.04% (frequency range from 500 Hz to 1 MHz).

    Original languageEnglish
    Pages (from-to)25760-25766
    Number of pages7
    JournalOptics Express
    Volume25
    Issue number21
    DOIs
    Publication statusPublished - 16 Oct 2017
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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